Sound travel fastest in
A) water vapor.
B) water.
C) ice.
D) steam.
E) all of the above
Answer: C
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When the number of turns in a solenoid and its length are both doubled, the ratio of the magnitude of the new magnetic field inside to the magnitude of the original magnetic field inside is what?
A. 0.25 B. 0.50 C. 1 D. 2 E. 4
Consider the following pairs of points: F: 0°N, 40°W G: 10°N, 60°W 0°N, 20°W 10°N, 40°W H: 20°S, 130°E J: 30°S, 170°E 20°S, 150°E 30°S, 150°E Which pair is closest together?
a. J b. F c. G d. H e. All are the same distance apart.
Standing Waves on a String: A guitar string 0.65 m long has a tension of 61 N and a mass per unit length of 3.0 g/m.(a) What is the speed of waves on the string when it is plucked?(b) What is the string's fundamental frequency of vibration when plucked?(c) At what other frequencies will this string vibrate?
What will be an ideal response?
When gas in a container expands to three times its volume at constant temperature, the gas pressure
A) is one third. B) is one ninth. C) triples. D) remains the same.